llvm/llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp

//===- AArch64LegalizerInfo.cpp ----------------------------------*- C++ -*-==//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
/// \file
/// This file implements the targeting of the Machinelegalizer class for
/// AArch64.
/// \todo This should be generated by TableGen.
//===----------------------------------------------------------------------===//

#include "AArch64LegalizerInfo.h"
#include "AArch64RegisterBankInfo.h"
#include "AArch64Subtarget.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/CodeGen/GlobalISel/GenericMachineInstrs.h"
#include "llvm/CodeGen/GlobalISel/LegalizerHelper.h"
#include "llvm/CodeGen/GlobalISel/LegalizerInfo.h"
#include "llvm/CodeGen/GlobalISel/MIPatternMatch.h"
#include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"
#include "llvm/CodeGen/GlobalISel/Utils.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/TargetOpcodes.h"
#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/IntrinsicsAArch64.h"
#include "llvm/IR/Type.h"
#include "llvm/Support/MathExtras.h"
#include <initializer_list>

#define DEBUG_TYPE …

usingnamespacellvm;
usingnamespaceLegalizeActions;
usingnamespaceLegalizeMutations;
usingnamespaceLegalityPredicates;
usingnamespaceMIPatternMatch;

AArch64LegalizerInfo::AArch64LegalizerInfo(const AArch64Subtarget &ST)
    : … { … }

bool AArch64LegalizerInfo::legalizeCustom(
    LegalizerHelper &Helper, MachineInstr &MI,
    LostDebugLocObserver &LocObserver) const { … }

bool AArch64LegalizerInfo::legalizeFunnelShift(MachineInstr &MI,
                                               MachineRegisterInfo &MRI,
                                               MachineIRBuilder &MIRBuilder,
                                               GISelChangeObserver &Observer,
                                               LegalizerHelper &Helper) const { … }

bool AArch64LegalizerInfo::legalizeICMP(MachineInstr &MI,
                                        MachineRegisterInfo &MRI,
                                        MachineIRBuilder &MIRBuilder) const { … }

bool AArch64LegalizerInfo::legalizeRotate(MachineInstr &MI,
                                          MachineRegisterInfo &MRI,
                                          LegalizerHelper &Helper) const { … }

bool AArch64LegalizerInfo::legalizeSmallCMGlobalValue(
    MachineInstr &MI, MachineRegisterInfo &MRI, MachineIRBuilder &MIRBuilder,
    GISelChangeObserver &Observer) const { … }

bool AArch64LegalizerInfo::legalizeIntrinsic(LegalizerHelper &Helper,
                                             MachineInstr &MI) const { … }

bool AArch64LegalizerInfo::legalizeShlAshrLshr(
    MachineInstr &MI, MachineRegisterInfo &MRI, MachineIRBuilder &MIRBuilder,
    GISelChangeObserver &Observer) const { … }

static void matchLDPSTPAddrMode(Register Root, Register &Base, int &Offset,
                                MachineRegisterInfo &MRI) { … }

// FIXME: This should be removed and replaced with the generic bitcast legalize
// action.
bool AArch64LegalizerInfo::legalizeLoadStore(
    MachineInstr &MI, MachineRegisterInfo &MRI, MachineIRBuilder &MIRBuilder,
    GISelChangeObserver &Observer) const { … }

bool AArch64LegalizerInfo::legalizeVaArg(MachineInstr &MI,
                                         MachineRegisterInfo &MRI,
                                         MachineIRBuilder &MIRBuilder) const { … }

bool AArch64LegalizerInfo::legalizeBitfieldExtract(
    MachineInstr &MI, MachineRegisterInfo &MRI, LegalizerHelper &Helper) const { … }

bool AArch64LegalizerInfo::legalizeCTPOP(MachineInstr &MI,
                                         MachineRegisterInfo &MRI,
                                         LegalizerHelper &Helper) const { … }

bool AArch64LegalizerInfo::legalizeAtomicCmpxchg128(
    MachineInstr &MI, MachineRegisterInfo &MRI, LegalizerHelper &Helper) const { … }

bool AArch64LegalizerInfo::legalizeCTTZ(MachineInstr &MI,
                                        LegalizerHelper &Helper) const { … }

bool AArch64LegalizerInfo::legalizeMemOps(MachineInstr &MI,
                                          LegalizerHelper &Helper) const { … }

bool AArch64LegalizerInfo::legalizeExtractVectorElt(
    MachineInstr &MI, MachineRegisterInfo &MRI, LegalizerHelper &Helper) const { … }

bool AArch64LegalizerInfo::legalizeDynStackAlloc(
    MachineInstr &MI, LegalizerHelper &Helper) const { … }

bool AArch64LegalizerInfo::legalizePrefetch(MachineInstr &MI,
                                            LegalizerHelper &Helper) const { … }